consdn7

Hey all, So I believe I've done my due dilligence in research but can't seem to find a black and white answer anywhere, so I'm turning to here. The question I have is: I currently have a 2015 Silverado 1500 4X4 with a 3.5 in rough country lift with their forged upper control arms. It was installed from the previous owner and how I purchased the truck. I'm looking to upgrade the lift anywhere to a 5-7 in lift. Upon looking on RC's website it says the UCA's are only good up to 3.5 inches of lift. Do I need to buy stock UCA's or find some sort of alternative if I plan to lift 5-7" Thanks.